(EU) - Worlds in Our Solar System, and Planets in the Starry Heavens, and Their Inhabitants, as Well as the Spirits and Angels There: From Things Heard and Seen

24. The spirits of the earth Mercury do not abide long in one place, or within companies of the spirits of one world, but wander through the universe. The reason is, because they have relation to the memory of things, which memory must be continually enriched. Hence it is granted them to wander about, and to acquire to themselves knowledges in every place. During their sojourning in this manner, if they meet with spirits who love material things, that is, things corporeal and terrestrial, they avoid them, and betake themselves where they do not hear such things. Hence it may appear, that their mind is elevated above things of sense, and thus that they are in interior light. This was also given me actually to perceive, whilst they were near me, and discoursed with me: I observed at such times, that I was withdrawn from things of sense, insomuch that the light of my eyes began to grow dull and obscure.